

Jack Besser
80 posts

@jack_besser
Director of Analytics + Asst. Pitching Coach, @CULionsBaseball + @SABRLions. @WashUBaseball alum. @CVTCNYC Advocate.



3 games, 3 bombs. Jack Kail kicks us off 🧵





After an awesome fall learning from experts and building our biggest team yet, we are ready to bring you all things Columbia Baseball this season. Expect in-depth analytics, new models, and much more. Introducing the SABRLions team! ⬇️ medium.com/columbia-sabr-…








New season, new Trackman operators! Emma-Caroline Avery (@ecavery03) crushed her Trackman and pitch metrics presentation in front of an awesome group of current and future SABRLions. ECA is the longest-tenured SABRLion (3 years!) — we're so lucky to have her on the team! 💪

What's that? You want some training highlights? Fine. We'll post some highlights. Here's @ASotiropoulos12: ⛽️ 96 MPH 🛫 21 IVB ➡️ 9.5 HB

Introducing Hot Velo Fall. This year, we did fall ball a little differently and set velocity PRs left and right. Here's how we did it ⬇️ medium.com/columbia-sabr-…

Introducing Hot Velo Fall. This year, we did fall ball a little differently and set velocity PRs left and right. Here's how we did it ⬇️ medium.com/columbia-sabr-…


It's been an awesome fall preparing for the @CULionsBaseball season. We heard from an MLB GM, coach, player, and analysts — on top of some of the best in college baseball analytics out there. @PeytonProksch breaks down our Speaker Series ⬇️ medium.com/columbia-sabr-…


I had surgery to repair and brace my UCL on March 11th, 2025. On Nov 7th, I returned to live pitching a full month ahead of a typical TJ3 rehab process with zero setbacks, sitting 1 mph above my pre-surgery velocity. Here’s what I learned during my rehab and return-to-throw:




Everyone wants better stuff, but raw stuff alone doesn’t win games. The real separator is command. 🎯 That’s where @ParadigmPDS comes in. 🧠⚾️ Introducing Paradigm+ A Thread🧵